Mermer Tozu ve Uçucu Külün Çimento Harçlarının Mekanik Özelliklerine Etkisi

Yıl 2021, Cilt: 21 Sayı: 5, 1137 - 1145, 31.10.2021

Cüneyt Doğan , İsmail Demir

https://doi.org/10.35414/akufemubid.977280

Cited By: 2

Öz

Mermer tozu ve uçucu kül, yapı teknolojisi üzerinde önemli bir etkiye sahiptir. Uçucu kül ve mermer tozu, farklı özelliklerde çimento esaslı kompozitlerin üretilmesine olanak sağlar. Bu çalışmada, harçlarda mermer tozu ve uçucu kül kullanımı incelenmiş ve bu malzemelerin harcın mukavemet özellikleri üzerindeki etkisini belirleyen çalışmanın sonuçları sunulmuştur. Çalışmada CEM I 42.5 R çimentosu ile ince agreganın mermer tozu, uçucu kül ve uçucu kül ile birlikte mermer tozu ikame edildiği toplam 15 harç karışımı üretilmiştir. Sabit (0.58) su/çimento oranıyla üretilen numunelere 7 ve 28 günlük eğilme ve basınç testleri uygulanmıştır. Numunelerin mikro yapısı XRD tekniği ile incelenmiştir. Mermer tozunun standart kum ile %5 oranında ikame edilmesi basınç ve eğilme dayanımını arttırdığı belirlenmiştir. Ayrıca, %20 uçucu kül ikamesi, harçlarda 49.5 MPa basınç mukavemeti elde edilerek en yüksek mekanik özellikler bulunmuştur. Benzer şekilde, %15 mermer tozu ve %15 uçucu kül kullanımının harçların mekanik özelliklerini iyileştirdiği tespit edilmiştir. Uçucu külün puzolanik özelliklerinin sayesinde harçta oldukça etkili bir katkı malzemesi olduğu ve uçucu kül ile mermer tozunun çimento esaslı kompozitlerde kullanımı çevreyi korumak için önemli uygulama olduğu sonucuna varılmıştır.

Anahtar Kelimeler

Mermer Tozu, Uçucu Kül, Çimento Harcı, Mekanik Özellikler

The Effect of Marble Powder and Fly Ash on Mechanical Properties of Cement Mortars

Öz

Marble powder and fly ash have a significant influence on building technology. Fly ash and marble powder allow the production of cement-based composites with different properties. The use of marble powder and fly ash in mortars was researched and the findings of the study to understand the effect of these materials on mortar were presented. The fine aggregate was substituted with marble powder, fly ash, and both marble powder and fly ash in a total of 15 mortar mix produced with CEM I 42.5 R cement. 7 and 28 days bending and compression tests were applied to the samples produced with a constant (0.58) water/cement ratio. The microstructure of the samples was investigated by XRD technique. In the substitution of standard sand with marble powder, it was discovered that a 5% substitution increased flexural and compressive strength. Similarly, 20% fly ash substitution in mortars resulted in maximum mechanical properties, with a compressive strength of 49.5 MPa. It was also determined that using 15% marble powder and 15% fly ash increased the mechanical properties of mortars. It has been concluded that fly ash is a very effective additive in mortar thanks to its pozzolanic properties, and the use of fly ash and marble dust in cement-based composites is an important application to protect the environment.

Anahtar Kelimeler

Marble Powder, Fly ash, Cement Mortar, Mechanical Properties

Kaynakça

• Dhanapandian, S., Gnanavel, B. and Ramkumar, T., 2009. Utilization of granite and marble sawing powder wastes as brick materials. Carpathian Journal of Earth and Environmental Sciences, 4, 147 – 160.
• Eliche-Quesada, D., Corpas-Iglesias, F.A., Pérez-Villarejo, L. and Iglesias-Godino, F.J., 2012. Recycling of sawdust, spent earth from oil filtration, compost and marble residues for brick manufacturing. Construction and Building Materials, 34, 275–284.
• Golewski G.L., 2020. Energy Savings Associated with the Use of Fly Ash and Nanoadditives in the Cement Composition. Energies, 13(9), 2184, 2020.
• Ferreira, C., Ribeiro, A. and Ottosen, L., 2003. Possible applications for municipal solid waste fly ash. Journal of Hazardous Materials, B96, 201-216.
• Bilgin, N., Yeprem, H.A., Arslan, S., Bilgin, A., Günay, E. and Marşoglu, M., 2012. Use of waste marble powder in brick industry. Construction and Building Materials, 29, 449–457.
• Hwang, K.R., Noguchi, T. and Tomosawa, F., 1998. Effects of fine aggregate replacement on the rheology, compressive strength and carbonation properties of fly ash and mortar. American Concrete Institute Special Publication, 178, 401–410.
• Mangaraj, B.K. and Krishnamoorthy, S., 1994. Use of pond fly ash as part replacement for mortar and concrete. Indian Concrete Journal, 1994(May), 279–82.
• Pofale, A.D. and Deo, S.V., 2010. Comparative Long Study of Concrete Mix Design Procedure for Fine Aggregate Replacement with Fly Ash by Minimum Voids Method and Maximum Density Method. KSCE Journal of Civil Engineering, 14, 759-764.
• Maslehuddin, M., 1989. Effect of sand replacement on the early – age strength gain and long – term corrosion – resisting characteristics of fly ash concrete. American Concrete Institute Materials Journal, 86, 58–62.
• Bonavetti, V.L. and Irassar, E.F., 1994. The effect of stone dust content in sand. Cement and Concrete Research, 24, 580-590.
• Keleştemur, O., Arıcı, E., Yıldız, S. and Gökçer, B., 2014. Performance evaluation of cement mortars containing marble dust and glass fiber exposed to high temperature by using Taguchi method. Construction and Building Materials, 60, 17-24.
• Almeida, N., Branco, F. and Santos, J.R., 2007. Recycling of stone slurry in industrial activities. Application to concrete mixtures, Building and Environment, 42, 810-819.
• Rai, B., Khan, N.H., Abhishek K, Tabin R.S. and Duggal S.K., 2011. Influence of Marble powder/granules in Concrete mix. International Journal of Structural and Civil Engineering, 1, 827–834.